feat(app): 接入首页轮播 banner

lib/pages/home/home_logic.dart

@@ -7,6 +7,8 @@ import '../../core/data/models/drama.dart';
 import '../../core/data/services/catalog_controller.dart';
 import '../../core/data/services/download_controller.dart';
 import '../../core/data/services/wallet_controller.dart';
+import '../../core/data/repositories/catalog_repository.dart';
+import '../../l10n/app_localizations.dart';
 import '../discover/discover_logic.dart';
 import '../drama_detail/drama_detail_view.dart';
 import '../mine/mine_logic.dart';
@@ -85,6 +87,20 @@ class HomeLogic extends ChangeNotifier {
     );
   }
 
+  /// Resolves a banner link that is not in the loaded feed, then opens detail.
+  Future<void> openDramaById(BuildContext context, String dramaId) async {
+    try {
+      final drama = await context.read<CatalogRepository>().fetchDrama(dramaId);
+      if (context.mounted) openDrama(context, drama);
+    } catch (_) {
+      if (!context.mounted) return;
+      final message = AppLocalizations.of(context)!.detailLoadFailed;
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text(message)));
+    }
+  }
+
   Future<void> playDrama(BuildContext context, Drama drama) async {
     // 列表卡片只有一集预览，进入播放前补齐完整剧集，否则选集列表是空的。
     var playable = drama;

lib/pages/home/home_view.dart

@@ -76,6 +76,7 @@ class HomePage extends StatelessWidget {
       key: ValueKey(catalog.dramas.first.id),
       dramas: catalog.dramas,
       sections: catalog.sections,
+      banners: catalog.banners,
     );
   }
 }
@@ -100,10 +101,16 @@ class HomeFailureView extends StatelessWidget {
 
 /// The three primary destinations share a single route and keep their state.
 class _HomeTabs extends StatefulWidget {
-  const _HomeTabs({super.key, required this.dramas, required this.sections});
+  const _HomeTabs({
+    super.key,
+    required this.dramas,
+    required this.sections,
+    required this.banners,
+  });
 
   final List<Drama> dramas;
   final List<FeedSection> sections;
+  final List<FeedBanner> banners;
 
   @override
   State<_HomeTabs> createState() => _HomeTabsState();
@@ -182,6 +189,13 @@ class _HomeTabsState extends State<_HomeTabs> {
               onSignIn: () => openAuthPage(context),
               onCoins: logic.openProfile,
               onRewards: logic.openProfile,
+              banners: widget.banners,
+              onBannerSelected: (banner) {
+                final dramaId = banner.dramaId;
+                if (dramaId != null) {
+                  unawaited(logic.openDramaById(context, dramaId));
+                }
+              },
               onAction: (action) => logic.discoverAction(context, action),
             ),
             MyPage(